Acetaldehyde emissions from wood-based materials, particularly glued-laminated timber bonded by phenol-resorcinol-formaldehyde (PRF) adhesives, were found in indoor air, sometimes in extraordinary amounts (Matsuda et al.
A single glued-laminated timber was manufactured for each test condition, and the test specimens were produced from five laminas.
Two glued-laminated timber samples per condition were manufactured.
The code GL refers to glued-laminated timber, while the letters A, B, C, and D refer to the commercial PRF resin from each resin manufacturer, and S refers to sugi lamina laminated without adhesive as a control.
Other engineered wood products today include wood I-joists, glued-laminated timber
, commonly called glulam, and laminated veneer lumber.
Most notable have been the development and refinement of wood preservatives and the use of structural glued-laminated timber (glulam), stress-laminating, and structural composite lumber.
Through engineered wood products, such as glued-laminated timber and structural composite lumber, many of these variables are substantially reduced.
Performance of glued-laminated timber
panels for bridge-deck replacement.
Four groups of 5-lamination glued-laminated timber
beams were designed.
OSB), laminated veneer lumber (LVL) and glued-laminated timber
Again, results indicated that small-diameter, suppressed-growth Douglas-fir can produce some high-quality lumber that offers significant opportunities in products such as trusses, glued-laminated timbers, and I-beams.
Species such as' aspen and yellow-poplar are now being used in laminated veneer lumber, wood I-joists, oriented strand-board, and glued-laminated timbers.